https://shop.saegenspezi.de/flywheel-puller-extractor-fits-Stihl-AV-042-048-050-051-064-066-075-076-084-088-MS640-650-660-661-880-070-090-TS510-TS760
Purchase this, obtain dimensions, send it back for refund.
Even though they were forced to lower ZDDP from spark ignition oils, they still have to formulate more expensive additives to take it‘s place. From what I understand ZDDP is/was a good and cheap additive but not friendly to catalytic converters on engines with 150,000+ miles.
You can test to make sure the tank vent is operating with the pressure tester. The vent is located under a small panel on the clutch side near where there would be an arctic switch by the handle mount. Fine debris can accumulate there.
If you don‘t have the tools to pressure check things the cheapest option may be to buy an aftermarket carburetor and try it. I know mine has a weep hole drilled below the intake floor that drains through the cylinder wall into the crankcase. That may have been a running change to alleviate fuel...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.